Outdoor unit chassis

Abstract

The outdoor unit chassis comprises a main chassis body and at least one expansion chassis body, and at least one first connecting part is arranged on the edge of the main chassis body; a second connecting part matched with the first connecting part is arranged on the edge of the extension chassis, and the extension chassis can be detachably connected with the main chassis through the second connecting part and the first connecting part. According to the outdoor unit chassis provided by the invention, the outdoor unit chassis is divided into the main chassis and the at least one expansion chassis, the main chassis and the at least one expansion chassis can be separately stored during transportation, so that the size is effectively reduced, the transportation cost is reduced, only the corresponding position is replaced when damage occurs, and the maintenance cost is favorably reduced. In addition, the overall size of the outdoor unit chassis can be changed by changing the number of the expansion chassis installed on the main chassis, and therefore the outdoor unit chassis can adapt to more outdoor units of different sizes.

Description

Technical Field

[0001] This application relates to the field of air conditioning equipment technology, and more specifically, to an outdoor unit chassis. Background Technology

[0002] As people's demand for air conditioning power increases, the size of outdoor air conditioning units is getting larger and larger. The chassis of these outdoor units is usually manufactured as a single piece, making transportation difficult and increasing logistics costs. Furthermore, if the chassis is damaged or corroded, the entire unit must be replaced, resulting in high maintenance costs. In addition, each type of outdoor unit chassis can only be used with one or a few corresponding sizes of outdoor units, making it impossible to accommodate units of different sizes, leading to high customization costs. Utility Model Content

[0003] This application provides an outdoor unit chassis to solve at least one of the aforementioned technical problems.

[0004] The outdoor unit chassis of this application includes:

[0005] The main chassis has at least one first connecting portion on its edge;

[0006] At least one extended chassis, the edge of which is provided with a second connecting portion that mates with the first connecting portion, and the extended chassis can be detachably connected to the main chassis via the second connecting portion and the first connecting portion.

[0007] The outdoor unit chassis provided in this application is divided into a main chassis and at least one extension chassis. These can be separately packed during transportation to effectively reduce size, thereby lowering transportation costs. In case of damage, only the corresponding part needs to be replaced, which helps reduce maintenance costs. Furthermore, the overall size of the outdoor unit chassis can be changed by altering the number of extension chassis installed on the main chassis, thus accommodating outdoor units of various sizes.

[0008] In some embodiments, the main chassis includes a main bottom wall and a main side wall extending from the main bottom wall in a direction perpendicular to the plane of the main bottom wall. The first connecting portion is disposed on the main side wall. The extended chassis includes an extended bottom wall and an extended side wall extending from the extended bottom wall in a direction perpendicular to the plane of the extended bottom wall. The second connecting portion includes a flange formed by extending the extended side wall away from the extended bottom wall and folding it over. When the extended chassis is installed on the main chassis, the main side wall is engaged between the flange and the extended side wall.

[0009] In this way, the main chassis and the extended chassis are connected by a flange, which helps to reduce the difficulty of installation. At the same time, the flange is easy to process, which helps to reduce the difficulty of production.

[0010] In some embodiments, the first connecting portion further includes a first through hole disposed on the main sidewall, and the second connecting portion further includes a second through hole penetrating the extended sidewall and the flange. When the extended chassis is mounted on the main chassis, fasteners can pass through the first through hole and the second through hole to fix the main chassis and the extended chassis.

[0011] Thus, fasteners passing through the first and second through holes and securing them helps improve the stability and strength of the connection between the main chassis and the extended chassis.

[0012] In some embodiments, the first connecting portion includes a limiting groove formed by the inward recess of the main sidewall, and the second connecting portion includes a limiting portion formed by the outward protrusion of the extended sidewall. When the extended chassis is mounted on the main chassis, the limiting portion is located within the limiting groove.

[0013] In this way, the limiting groove and the limiting part can be used to determine the relative position of the main chassis and the extended chassis, which helps to reduce the difficulty of installation.

[0014] In some embodiments, the main bottom wall is recessed in the direction of extension away from the main side wall to form a first drainage groove, and a first drainage hole is provided at the bottom of the first drainage groove. The extended bottom wall is recessed in the direction of extension away from the extended side wall to form a second drainage groove, and a second drainage hole is provided at the bottom of the second drainage groove.

[0015] Thus, the first and second drainage channels are used to collect condensate formed in the main chassis and extended chassis, and the first and second drainage holes are used to drain the condensate, preventing condensate from soaking other components inside the outdoor unit for a long time and causing corrosion.

[0016] In some embodiments, there are multiple first drainage channels that are connected to each other, and there are multiple second drainage channels that are connected to each other.

[0017] Therefore, setting up multiple interconnected drainage channels helps to collect condensate from more locations.

[0018] In some embodiments, the bottom of the first drainage trough is inclined toward the first drainage hole, and the bottom of the second drainage trough is inclined toward the second drainage hole.

[0019] In this way, the first and second drainage channels, which are set at an angle on the bottom, can more easily drain the condensate.

[0020] In some embodiments, the inclination angle between the bottom surface of the first drainage trough and the bottom surface of the second drainage trough is 2° to 4°.

[0021] This avoids poor drainage due to an excessively small tilt angle, and also avoids difficulties in processing due to an excessively large angle.

[0022] In some embodiments, the main bottom wall protrudes in the direction of extension of the main side wall to form a first reinforcing boss, and the extended bottom wall protrudes in the direction of extension of the extended side wall to form a second reinforcing boss.

[0023] Therefore, setting up reinforcing bosses helps to improve the structural strength of the main chassis and extended chassis.

[0024] In some embodiments, there are two first connecting portions, which are respectively disposed on both sides of the main chassis along the length direction.

[0025] In this way, the main chassis can be expanded in size on both sides in the length direction, which is beneficial for matching outdoor units of more sizes and adapting to more usage scenarios.

[0026] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0027] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0028] Figure 1 This is a schematic diagram of the outdoor unit chassis according to an embodiment of this application;

[0029] Figure 2 This is a partial structural diagram of the main chassis of the outdoor unit chassis according to an embodiment of this application;

[0030] Figure 3 This is a schematic diagram of the structure of the extended chassis of the outdoor unit chassis according to the embodiments of this application;

[0031] Figure 4 This is a partial structural diagram of the extended chassis of the outdoor unit chassis according to an embodiment of this application;

[0032] Figure 5 This is a cross-sectional view of the outdoor unit chassis according to an embodiment of this application.

[0033] Explanation of main component symbols: Outdoor unit chassis 100, main chassis 10, first connecting part 11, first through hole 111, limiting groove 112, main bottom wall 12, first drainage groove 121, first drainage hole 122, first reinforcing boss 123, main side wall 13, extended chassis 20, second connecting part 21, flange 211, second through hole 212, limiting part 213, extended bottom wall 22, second drainage groove 221, second drainage hole 222, second reinforcing boss 223, extended side wall 23, fastener 30. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] This disclosure provides many different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described herein. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0038] As people's demand for air conditioning power increases, the size of outdoor air conditioning units is getting larger and larger. The chassis of these outdoor units is usually manufactured as a single piece, making transportation difficult and increasing logistics costs. Furthermore, if the chassis is damaged or corroded, the entire unit must be replaced, resulting in high maintenance costs. In addition, each type of outdoor unit chassis can only be used with one or a few corresponding sizes of outdoor units, making it impossible to accommodate units of different sizes, leading to high customization costs.

[0039] Please see Figure 1 The outdoor unit chassis 100 of this application includes a main chassis 10 and at least one extended chassis 20. The edge of the main chassis 10 is provided with at least one first connecting part 11; the edge of the extended chassis 20 is provided with a second connecting part 21 that cooperates with the first connecting part 11. The extended chassis 20 can be detachably connected to the main chassis 10 through the second connecting part 21 and the first connecting part 11.

[0040] The outdoor unit chassis 100 provided in this application is divided into a main chassis 10 and at least one extension chassis 20. These can be separately packed during transportation to effectively reduce size, thereby lowering transportation costs. In case of damage, only the corresponding part needs to be replaced, which helps reduce maintenance costs. Furthermore, the overall size of the outdoor unit chassis 100 can be changed by altering the number of extension chassis 20 installed on the main chassis 10, thus accommodating outdoor units of various sizes.

[0041] Specifically, in this embodiment, the outdoor unit chassis 100 is an important support structure for the air conditioner outdoor unit, mainly responsible for bearing the weight of the equipment, protecting the internal components, and providing stability.

[0042] In this embodiment, both the main chassis 10 and the extension chassis 20 are integrally formed structures. The outdoor unit chassis 100 is typically made of rust-resistant galvanized steel, stainless steel, or lightweight aluminum alloy. Depending on the model, metal sheets of 1.2–2.0 mm thickness are usually selected. The metal sheets are stamped into specific shapes using molds. Complex structures require bending before welding, ensuring smooth and strong welds to avoid stress concentration. This not only results in high efficiency and good structural consistency but also ensures load-bearing capacity and resistance to deformation.

[0043] In this embodiment, since the outdoor unit chassis 100 needs to be assembled with components such as the compressor bracket and the condenser mounting bracket, a boss should be provided on the outdoor unit chassis 100 at the position corresponding to the compressor and the condenser to enhance the structural strength of the chassis.

[0044] Please see Figures 1 to 5 In some embodiments, the main chassis 10 includes a main bottom wall 12 and a main side wall 13 extending from the main bottom wall 12 in a direction perpendicular to the plane of the main bottom wall 12. A first connecting portion 11 is disposed on the main side wall 13. The extended chassis 20 includes an extended bottom wall 22 and an extended side wall 23 extending from the extended bottom wall 22 in a direction perpendicular to the plane of the extended bottom wall 22. A second connecting portion 21 includes a flange 211 formed by extending the extended side wall 23 away from the extended bottom wall 22 and folding it over. When the extended chassis 20 is installed on the main chassis 10, the main side wall 13 is engaged between the flange 211 and the extended side wall 23.

[0045] In this way, the main chassis 10 and the extended chassis 20 are connected by the flange 211, which helps to reduce the difficulty of installation. At the same time, the flange 211 is easy to process, which helps to reduce the difficulty of production.

[0046] Specifically, in this embodiment of the application, the edge of the extended sidewall 23 is folded outward by 90 degrees to form a flange 211 by a bending process.

[0047] It is important to note that the thickness and strength of the materials used in the extension chassis 20 must be considered to ensure that the flange 211 does not deform after repeated disassembly and reassembly. The fit tolerance between the main sidewall 13 and the flange 211 must be precise; too loose and it will wobble, too tight and it may be difficult to install. Furthermore, the installation direction of the extension chassis 20 may need to be clearly marked to avoid incorrect installation that could lead to structural instability.

[0048] In this embodiment, there are multiple flanges 211, which are spaced apart on the extended sidewall 23.

[0049] In other embodiments, the main chassis 10 and the extended chassis 20 may also be connected by other structures, such as snap-fit ​​connections, tenon and mortise connections, fastener connections, threaded connections, welding, riveting, etc.

[0050] In some embodiments, the flange 211 may also be disposed on the registration wall. In this case, when the extended chassis 20 is installed on the main chassis 10, the extended side wall 23 should be engaged between the flange 211 and the main side wall 13.

[0051] Please see Figure 2 and Figure 4 In some embodiments, the first connecting part 11 further includes a first through hole 111 disposed on the main side wall 13, and the second connecting part 21 further includes a second through hole 212 penetrating the extended side wall 23 and the flange 211. When the extended chassis 20 is mounted on the main chassis 10, the fastener 30 can pass through the first through hole 111 and the second through hole 212 to fix the main chassis 10 and the extended chassis 20.

[0052] Thus, fastening the fastener 30 through the first through hole 111 and the second through hole 212 helps to improve the stability and firmness of the connection between the main chassis 10 and the extension chassis 20.

[0053] Specifically, in this embodiment, the main sidewall 13 of the main chassis 10 needs to be provided with a first through hole 111, and the extended sidewall 23 and flange 211 of the extended chassis 20 need to be provided with corresponding second through holes 212. When the extended chassis 20 is installed in place, the first through hole 111 and the second through hole 212 are aligned and then fixed with fasteners 30. This increases the firmness of the connection and prevents loosening or separation caused by vibration during long-term use. At the same time, the fasteners 30 can provide more reliable fixation and are suitable for use in harsh environments or under high load conditions. In addition, it may improve the stability of the overall structure and reduce noise and vibration.

[0054] It is important to note that when the extended chassis 20 is installed, the first through hole 111 and the second through hole 212 must be aligned. Inaccurate hole alignment will cause installation difficulties. The structural strength around the first through hole 111 and the second through hole 212 must be sufficient to prevent cracking during installation. Rust prevention treatment is also necessary, especially for the fasteners 30 and the area around the first through hole 111 and the second through hole 212, to prevent corrosion that could hinder disassembly.

[0055] In this embodiment, the fastener 30 is a rivet, that is, the rivet passes through the first through hole 111 and the second through hole 212 to rivet the main chassis 10 and the extension chassis 20 together. Since this method requires destroying the rivet during disassembly, this connection method is suitable for occasions where the main chassis 10 and the extension chassis 20 need to be connected for a long time and there are few opportunities for disassembly.

[0056] In other embodiments, fastener 30 may also be a bolt and nut that cooperate with each other. It should be noted that the bolt is long enough to pass through both holes and has sufficient thread engagement length.

[0057] In some embodiments, the first connecting portion 11 includes a limiting groove 112 formed by the inward recess of the main sidewall 13, and the second connecting portion 21 includes a limiting portion 213 formed by the outward protrusion of the extended sidewall 23. When the extended chassis 20 is installed on the main chassis 10, the limiting portion 213 is located in the limiting groove 112.

[0058] Thus, the limiting groove 112 and the limiting part 213 can be used to determine the relative position of the main chassis 10 and the extended chassis 20, which helps to reduce the difficulty of installation.

[0059] Specifically, in this embodiment, the main sidewall 13 is recessed inward to form a limiting groove 112 by stamping or bending. Optionally, the limiting groove 112 can be a T-groove or a dovetail groove. The extended sidewall 23 is stamped outward to form a limiting part 213 that mates with the limiting groove 112. The length of the limiting part 213 is the same as the depth of the limiting groove 112. During installation, simply align the limiting part 213 of the extended base 20 with the limiting groove 112 of the main sidewall 13, push it horizontally, and press it down so that the limiting part 213 is completely embedded in the groove.

[0060] The mechanical engagement between the limiting groove 112 and the limiting part 213 can resist lateral impact forces (such as in strong winds) and prevent the extended chassis 20 from accidentally falling off. In addition, the tenon and groove structure naturally has an alignment function, reducing installation errors and improving assembly efficiency.

[0061] Furthermore, the bottom of the limiting groove 112 can be chamfered to facilitate the quick insertion of the limiting part 213. A bending rib can be added at the root of the limiting part 213 on the inner side of the extended side wall 23 to prevent deformation under stress.

[0062] It should be noted that the limiting groove 112 and the limiting part 213 need to be unidirectionally interference-fitted (e.g., the groove width is 0.1 to 0.2 mm smaller than the tenon width) to ensure fastening while avoiding jamming.

[0063] Please see Figure 1 and Figure 3 In some embodiments, the main bottom wall 12 is recessed in the direction of extension away from the main side wall 13 to form a first drainage groove 121, and a first drainage hole 122 is provided at the bottom of the first drainage groove 121. The extended bottom wall 22 is recessed in the direction of extension away from the extended side wall 23 to form a second drainage groove 221, and a second drainage hole 222 is provided at the bottom of the second drainage groove 221.

[0064] Thus, the first drain trough 121 and the second drain trough 221 are used to collect the condensate formed in the main chassis 10 and the extended chassis 20, and the first drain hole 122 and the second drain hole 222 are used to drain the condensate, so as to prevent the condensate from soaking other components inside the outdoor unit for a long time and causing corrosion.

[0065] Specifically, in this embodiment, the main bottom wall 12 is formed with a recessed first drainage groove 121 by stamping or bending. The first drainage groove 121 is U-shaped or rectangular, and a first drainage hole 122 is formed at the bottom of the first drainage groove 121. Similarly, the extended chassis 20 is formed with a recessed second drainage groove 221 by stamping or bending. The second drainage groove 221 is U-shaped or rectangular, and a second drainage hole 222 is formed at the bottom of the second drainage groove 221.

[0066] Furthermore, a stainless steel filter screen can be installed on the first drain hole 122 and the second drain hole 222. The stainless steel filter screen can prevent insects and avoid clogging the drain holes.

[0067] In some embodiments, there are multiple first drainage channels 121 connected together, and there are multiple second drainage channels 221 connected together.

[0068] Therefore, setting up multiple interconnected drainage channels helps to collect condensate from more locations.

[0069] Specifically, in this embodiment, a plurality of first drainage grooves 121 are stamped or bent on the main bottom wall 12 and connected together, and a plurality of second drainage grooves 221 are stamped or bent on the extended bottom wall 22 and connected together.

[0070] Multiple interconnected first drainage channels 121 and second drainage channels 221 can guide water flow to the first drainage hole 122 or the second drainage hole 222 more quickly, which helps to increase drainage efficiency.

[0071] It is important to ensure that the connections between the various tanks are made to avoid dead corners that could lead to water accumulation.

[0072] In some embodiments, the bottom of the first drainage groove 121 is inclined to the first drainage hole 122, and the bottom of the second drainage groove 221 is inclined to the second drainage hole 222.

[0073] Thus, the first drainage groove 121 and the second drainage groove 221, which are inclined at the bottom, can more easily drain the condensate.

[0074] Specifically, in the embodiments of this application, the inclined trough bottom can significantly improve drainage speed, reduce the risk of water accumulation, and prevent corrosion and bacterial growth. At the same time, the inclined design may simplify the structure and reduce the need for complex connecting pipes. Furthermore, the inclined trough bottom can enhance self-cleaning capabilities, utilizing gravity to remove impurities.

[0075] In this embodiment of the application, the first drain hole 122 should be set at the lowest point of the bottom of the first drain trough 121. Similarly, the second drain hole 222 should be set at the lowest point of the bottom of the second drain trough 221. In this way, the water flow can be collected along the inclined first drain trough 121 and the second drain trough 221 to the first drain hole 222 for the return ash, so as to be discharged from the outdoor unit chassis 100.

[0076] It is important to ensure machining precision and consistent tilt angles to prevent localized depressions that could lead to water accumulation. Material selection must ensure sufficient rigidity to prevent deformation, especially with large tilt angles. Furthermore, the tilt design may affect the overall structural stability, necessitating stress analysis and, if necessary, the addition of reinforcing ribs.

[0077] In other embodiments, the first drainage channel 121 and the second drainage channel 221 can also be designed as spiral guide channels to accelerate water flow using a spiral structure; or as stepped drainage channels to guide water flow through multi-stage drops. The specific structure of the first drainage channel 121 and the second drainage channel 221 needs to be selected according to the specific application scenario, and will not be elaborated on here.

[0078] In some embodiments, the inclination angle between the bottom surface of the first drainage channel 121 and the bottom surface of the second drainage channel 221 is 2° to 4°.

[0079] This avoids poor drainage due to an excessively small tilt angle, and also avoids difficulties in processing due to an excessively large angle.

[0080] Specifically, in the embodiments of this application, compared with the flat-bottomed first drainage channel 121 and the second drainage channel 221, the drainage speed is greatly improved by the 2° to 4° tilt angle, while avoiding the risk of material cracking caused by large angles.

[0081] Furthermore, in this embodiment, the first drainage trough 121 has an inclination angle of 3° along the width direction of the main chassis 10 and an inclination angle of 2° along the length direction of the main chassis 10. Similarly, the second drainage trough 221 has an inclination angle of 2° along the width direction of the main chassis 10 and an inclination angle of 3° along the length direction of the main chassis 10.

[0082] Please see Figure 1 and Figure 3In some embodiments, the main bottom wall 12 protrudes in the direction of extension of the main side wall 13 to form a first reinforcing boss 123, and the extended bottom wall 22 protrudes in the direction of extension of the extended side wall 23 to form a second reinforcing boss 223.

[0083] Thus, setting up a reinforcing boss helps to improve the structural strength of the main chassis 10 and the extended chassis 20.

[0084] Specifically, in this embodiment, the main bottom wall 12 is partially stamped towards the main side wall 13 to form a first reinforcing boss 123, and the extended bottom wall 22 is similarly formed to form a second reinforcing boss 223. The first reinforcing boss 123 and the second reinforcing boss 223 can improve the rigidity and load-bearing capacity of the overall structure, preventing deformation under heavy loads or impacts. At the same time, the first reinforcing boss 123 and the second reinforcing boss 223 can also optimize stress distribution and avoid local stress concentration.

[0085] Furthermore, the first reinforcing boss 123 and the second reinforcing boss 223 can be designed with appropriate transition radii through stamping processes to reduce stress concentration.

[0086] It is important to note that the position and size of the boss need to be precisely designed to avoid interference with other components. Also, the boss may add weight, so its impact on the overall structure must be considered.

[0087] In other embodiments, the first reinforcing boss 123 and the second reinforcing boss 223 can also be selected from other structures, such as reinforcing ribs, honeycomb panel structures, etc. Among them, reinforcing ribs may be easier to process, but the rigidity they provide may not be as good as that of the bosses. Honeycomb structures are lightweight but more expensive. The specific structure of the first reinforcing boss 123 and the second reinforcing boss 223 needs to be selected according to the specific application scenario, which will not be elaborated here.

[0088] Please see Figure 1 In some embodiments, there are two first connecting parts 11, and the two first connecting parts 11 are respectively disposed on both sides of the main chassis 10 along the length direction.

[0089] In this way, the main chassis 10 can be expanded in size on both sides in the length direction, which is beneficial for matching outdoor units of more sizes and adapting to more usage scenarios.

[0090] Specifically, in this embodiment, two first connecting parts 11 are respectively disposed on both sides of the main chassis 10 along the length direction. The structures of the two first connecting parts 11 on both sides are not the same. Correspondingly, the structures of the second connecting parts 21 of the two extended chassis 20 are also not the same, so as to avoid the two extended chassis 20 on both sides being installed backwards.

[0091] In other embodiments, the number of first connecting parts 11 may also be multiple, and correspondingly, multiple extension chassis 20 may be installed on the main chassis 10 to accommodate outdoor units of more sizes and models.

[0092] In other embodiments, the structures of the multiple first connecting parts 11 can be exactly the same, so that multiple extended chassis 20 can be used interchangeably.

[0093] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0094] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the stated features. In the description of this application, "multiple" means at least two, such as two or three, unless otherwise explicitly specified.

[0095] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An outdoor unit base pan, characterized by, The utility model relates to a main base plate, the edge of the main base plate is equipped with at least one first connecting part, at least one extension base plate, the edge of the extension base plate is equipped with the second connecting part with the first connecting part cooperation, the extension base plate can be detachable connection with the main base plate through the second connecting part and the first connecting part. The main base plate includes a main bottom wall and a main side wall extending perpendicularly to the plane of the main bottom wall, the first connecting part is provided on the main side wall, the extension base plate includes an extension bottom wall and an extension side wall extending perpendicularly to the plane of the extension bottom wall, the second connecting part includes a folded edge formed by the extension side wall extending away from the extension bottom wall and folding, when the extension base plate is installed on the main base plate, the main side wall is clamped between the folded edge and the extension side wall. The first connecting part further includes a first through hole provided on the main side wall, and the second connecting part further includes a second through hole penetrating the extension side wall and the folded edge, when the extension base plate is installed on the main base plate, a fastener can pass through the first through hole and the second through hole to fix the main base plate and the extension base plate.

2. The outdoor unit pan according to claim 1, wherein, The first connecting part includes a limiting groove formed by the inward recess of the main side wall, and the second connecting part includes a limiting part formed by the outward protrusion of the extension side wall, when the extension base plate is installed on the main base plate, the limiting part is located in the limiting groove.

3. The outdoor unit pan of claim 2, wherein, The main bottom wall is recessed to form a first drainage groove in the extension direction away from the main side wall, and the first drainage groove is provided with a first drainage hole at the bottom, and the extension bottom wall is recessed to form a second drainage groove in the extension direction away from the extension side wall, and the second drainage groove is provided with a second drainage hole at the bottom.

4. The outdoor unit pan of claim 2, wherein, The number of the first drainage grooves is multiple, and the multiple first drainage grooves are communicated, and the number of the second drainage grooves is multiple, and the multiple second drainage grooves are communicated.

5. The outdoor unit pan of claim 2, wherein, The bottom surface of the first drainage groove is inclined to the first drainage hole, and the bottom surface of the second drainage groove is inclined to the second drainage hole.

6. The outdoor unit pan of claim 5, wherein, The inclination angle of the bottom surface of the first drainage groove and the bottom surface of the second drainage groove is 2°-4°.

7. The outdoor unit pan of claim 5, wherein, The main bottom wall is protruded to form a first reinforcing boss in the extension direction of the main side wall, and the extension bottom wall is protruded to form a second reinforcing boss in the extension direction of the extension side wall.

8. The outdoor unit pan according to claim 7, wherein The number of the first connecting parts is two, and the two first connecting parts are respectively arranged on both sides of the main base plate in the length direction.

9. The outdoor unit pan of claim 2, wherein, ​ 10. The outdoor unit pan of claim 1, wherein, ​

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